[Choir] Fwd: sing along

[Lani Seifert]

A good explanation from Ed.

---------- Forwarded message ---------
From: Ed Hutchinson <ehutch at gmavt.net>
Date: Sat, Jun 13, 2020 at 8:23 PM
Subject: Re: [Choir] sing along
To: Lani Seifert <lani.seifert at gmail.com>


Singers and instrument players huff, puff, and aspirate a lot more airborne
droplets than a person speaking.  Musicians breath deeper into their lungs
(where a budding infection may be most evident), and those pesky percussive
bursts with short notes and aspirated consonants like T D K S V (and
probably more) explode out bursts of spit.  Those particles can float in
air for a lot more than ten feet under some circumstances.

We are super spreaders if there is one among us ill but feeling perfectly
fine.

What ever we do singing wise must be done with excessive caution.

Some of the worst outbreaks in the country have resulted from chorus or
choir activity.
On 6/13/20 8:04 PM, Lani Seifert via Choir wrote:

English please?
Please translate this as it relates to Bronwyn’s possible plan.
Sorry to be so dense!
Lani

On Sat, Jun 13, 2020 at 7:36 PM Richard Riley via Choir <
choir at unitarianchurchofmontpelier.org> wrote:

> Dear All,
>
> It's good to feel the pulse of your desire to sing together!
>
> Amazingly, "viral transmission via inhalation of small airborne
> respiratory droplets," cited in the May, 2020 paper *Statement of Work:
> Aerosol Generation from Playing Band Instruments, Singing and Performing
> and Risk of Infectious Disease Transmission
> <https://www.nfhs.org/media/3812357/risk-of-transmission-instrument-playing-vsfinal.pdf>* is
> still assessed by the so-called Wells-Riley model, named after my father,
> my Uncle Ed, and their teacher William Wells.
>
> This from another paper: "In the preface to his 1955 masterwork, “Airborne
> Contagion and Air Hygiene: An Ecological Study of Droplet Infections”
> published by Harvard University Press,... Wells attributes the crucial
> distinction between droplet nuclei (airborne inhalable dried residua of
> larger respiratory droplets) and germ-laden dust (non-inhalable larger
> respiratory droplets) to Richard L. Riley, a medical student working with
> him at Harvard at the time."
>
> I am very proud of my dad and uncle, and the fact that the Wells-Riley
> model is still one of the ways to assess risk for airborne infection is
> pretty amazing. *Please keep that Wells-Riley equation in mind when next
> you sing together*!
>
> Dick
>
>
> P.S. Here's the equation, for your next moment of light party conversation:
>
> [image: Screen Shot 2020-06-13 at 6.52.38 PM.png]
> Dick
> P=1−exp(−pQτq)
>
>
> On Fri, Jun 12, 2020 at 8:21 PM Bronwyn Fryer via Choir <
> choir at unitarianchurchofmontpelier.org> wrote:
>
>>
>> Hi all
>>
>> I’ve been thinking about trying to do this. If you don’t mind wearing a
>> mask when we sing closer than 10’ from one another we might attempt in, say
>> a 10-person per time group. Those of you who have been to my house know
>> that there is plenty of room to spread around. I can provide mics and
>> amplifiers for a few people and guitar accompaniment; it might be fun to do
>> rounds and a cappella too if we can hear one another.
>>
>> If interested, let me know and we can make arrangements.
>>
>> Love to all.
>> Unitarian Church of Montpelier
>> Choir email list
>> unsubscribe at www.unitarianchurchofmontpelier.org
>>
> Unitarian Church of Montpelier
> Choir email list
> unsubscribe at www.unitarianchurchofmontpelier.org
>

Unitarian Church of Montpelier
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